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GITREPOSITORY-LAYOU(5)			    Git Manual			   GITREPOSITORY-LAYOU(5)

NAME
       gitrepository-layout - Git Repository Layout

SYNOPSIS
       $GIT_DIR/*

DESCRIPTION
       You may find these things in your git repository (.git directory for a repository
       associated with your working tree, or <project>.git directory for a public bare
       repository. It is also possible to have a working tree where .git is a plain ascii file
       containing gitdir: <path>, i.e. the path to the real git repository).

       objects
	   Object store associated with this repository. Usually an object store is self
	   sufficient (i.e. all the objects that are referred to by an object found in it are
	   also found in it), but there are couple of ways to violate it.

	    1. You could populate the repository by running a commit walker without -a option.
	       Depending on which options are given, you could have only commit objects without
	       associated blobs and trees this way, for example. A repository with this kind of
	       incomplete object store is not suitable to be published to the outside world but
	       sometimes useful for private repository.

	    2. You also could have an incomplete but locally usable repository by cloning
	       shallowly. See git-clone(1).

	    3. You can be using objects/info/alternates mechanism, or
	       $GIT_ALTERNATE_OBJECT_DIRECTORIES mechanism to borrow objects from other object
	       stores. A repository with this kind of incomplete object store is not suitable to
	       be published for use with dumb transports but otherwise is OK as long as
	       objects/info/alternates points at the right object stores it borrows from.

       objects/[0-9a-f][0-9a-f]
	   Traditionally, each object is stored in its own file. They are split into 256
	   subdirectories using the first two letters from its object name to keep the number of
	   directory entries objects directory itself needs to hold. Objects found here are often
	   called unpacked (or loose) objects.

       objects/pack
	   Packs (files that store many object in compressed form, along with index files to
	   allow them to be randomly accessed) are found in this directory.

       objects/info
	   Additional information about the object store is recorded in this directory.

       objects/info/packs
	   This file is to help dumb transports discover what packs are available in this object
	   store. Whenever a pack is added or removed, git update-server-info should be run to
	   keep this file up-to-date if the repository is published for dumb transports.  git
	   repack does this by default.

       objects/info/alternates
	   This file records paths to alternate object stores that this object store borrows
	   objects from, one pathname per line. Note that not only native Git tools use it
	   locally, but the HTTP fetcher also tries to use it remotely; this will usually work if
	   you have relative paths (relative to the object database, not to the repository!) in
	   your alternates file, but it will not work if you use absolute paths unless the
	   absolute path in filesystem and web URL is the same. See also
	   objects/info/http-alternates.

       objects/info/http-alternates
	   This file records URLs to alternate object stores that this object store borrows
	   objects from, to be used when the repository is fetched over HTTP.

       refs
	   References are stored in subdirectories of this directory. The git prune command knows
	   to keep objects reachable from refs found in this directory and its subdirectories.

       refs/heads/name
	   records tip-of-the-tree commit objects of branch name

       refs/tags/name
	   records any object name (not necessarily a commit object, or a tag object that points
	   at a commit object).

       refs/remotes/name
	   records tip-of-the-tree commit objects of branches copied from a remote repository.

       packed-refs
	   records the same information as refs/heads/, refs/tags/, and friends record in a more
	   efficient way. See git-pack-refs(1).

       HEAD
	   A symref (see glossary) to the refs/heads/ namespace describing the currently active
	   branch. It does not mean much if the repository is not associated with any working
	   tree (i.e. a bare repository), but a valid git repository must have the HEAD file;
	   some porcelains may use it to guess the designated "default" branch of the repository
	   (usually master). It is legal if the named branch name does not (yet) exist. In some
	   legacy setups, it is a symbolic link instead of a symref that points at the current
	   branch.

	   HEAD can also record a specific commit directly, instead of being a symref to point at
	   the current branch. Such a state is often called detached HEAD, and almost all
	   commands work identically as normal. See git-checkout(1) for details.

       branches
	   A slightly deprecated way to store shorthands to be used to specify URL to git fetch,
	   git pull and git push commands is to store a file in branches/<name> and give name to
	   these commands in place of repository argument.

       hooks
	   Hooks are customization scripts used by various git commands. A handful of sample
	   hooks are installed when git init is run, but all of them are disabled by default. To
	   enable, the .sample suffix has to be removed from the filename by renaming. Read
	   githooks(5) for more details about each hook.

       index
	   The current index file for the repository. It is usually not found in a bare
	   repository.

       info
	   Additional information about the repository is recorded in this directory.

       info/refs
	   This file helps dumb transports discover what refs are available in this repository.
	   If the repository is published for dumb transports, this file should be regenerated by
	   git update-server-info every time a tag or branch is created or modified. This is
	   normally done from the hooks/update hook, which is run by the git-receive-pack command
	   when you git push into the repository.

       info/grafts
	   This file records fake commit ancestry information, to pretend the set of parents a
	   commit has is different from how the commit was actually created. One record per line
	   describes a commit and its fake parents by listing their 40-byte hexadecimal object
	   names separated by a space and terminated by a newline.

       info/exclude
	   This file, by convention among Porcelains, stores the exclude pattern list.
	   .gitignore is the per-directory ignore file.  git status, git add, git rm and git
	   clean look at it but the core git commands do not look at it. See also: gitignore(5).

       remotes
	   Stores shorthands to be used to give URL and default refnames to interact with remote
	   repository to git fetch, git pull and git push commands.

       logs
	   Records of changes made to refs are stored in this directory. See git-update-ref(1)
	   for more information.

       logs/refs/heads/name
	   Records all changes made to the branch tip named name.

       logs/refs/tags/name
	   Records all changes made to the tag named name.

       shallow
	   This is similar to info/grafts but is internally used and maintained by shallow clone
	   mechanism. See --depth option to git-clone(1) and git-fetch(1).

SEE ALSO
       git-init(1), git-clone(1), git-fetch(1), git-pack-refs(1), git-gc(1), git-checkout(1),
       gitglossary(7), The Git User's Manual[1]

GIT
       Part of the git(1) suite.

NOTES
	1. The Git User's Manual
	   file:///usr/share/doc/git-doc/user-manual.html

Git 1.7.1				    07/05/2010			   GITREPOSITORY-LAYOU(5)
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